<template>
  
        
        <el-container>
        <el-header>
              <div>
              <img src="../assets/heima.png" alt="">
              <span>电商后台管理系统</span>
              </div>
             <el-button type="info" @click='logout'>退出</el-button>
        </el-header>
        <el-container>
        <el-aside :width="isCollapse ? '64px' : '200px'">
            <div class="toggle-button" @click="toggleCollapse">|||</div>
         <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF"  unique-opened :collapse="isCollapse" :default-active="activePath" router :collapse-transition='false'>
            <el-submenu v-for="item in menulist" :index="item.id + ''" :key='item.id'>
                <template slot="title">
                    <i :class="iconsObj[item.id]"></i>
                    <span>{{item.authName}}</span>
                </template>
            <el-menu-item :index="'/' + subItem.path"  v-for="subItem in item.children" :key="subItem.id"  @click="saveNavState('/' + subItem.path)">
                <template slot="title">
                    <i class="el-icon-menu"></i>
                    <span  >{{subItem.authName}}</span>
                </template>            
            </el-menu-item>                      
            </el-submenu>
         </el-menu>
        </el-aside>
            <el-main>
                 <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>
<style lang="less" scoped>
    .el-container {
        height: 100%;
        .el-header {
            background: #373d41;
            display: flex;
            justify-content: space-between;
            padding-left: 0;
            align-items: center;
            color: #fff;
            font-size: 20px;
            > div {
                display: flex;
                align-items: center;
                span {
                    margin-left: 15px;
                }
                }
        }
        .el-aside {
            background: #333744;
        }
        .el-main {
            background: #eaedf1;
        }
    }
    .el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  
  font-size: 12px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>

<script>
import { close } from 'fs';
export default {
    data(){
        return{
            menulist: [],
            iconsObj: {
              '125': 'iconfont icon-user',
              '103': 'iconfont icon-tijikongjian',
              '101': 'iconfont icon-shangpin',
              '102': 'iconfont icon-danju',
              '145': 'iconfont icon-baobiao'
            },
            // 是否折叠
            isCollapse: false,
            // 被激活的链接地址
            activePath: ''
        }
    },
    created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
   
    },
    methods:{
        logout(){
            window,sessionStorage.clear()
            this.$router.push('/login')
        },
        async getMenuList(){
            const { data: res } = await this.$http.get('menus')
            
             
             if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
                this.menulist = res.data
               
           
        },
         toggleCollapse(){
              this.isCollapse = !this.isCollapse
              
         },
          // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
    },   
  

}
</script>

